Switch-stand.



E. N. STROM.

SWITCH STAND.

APPLICATION FILED APR. 27, ma.

9 1 3,926 Patented Mar. 2, 1909.

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EUGENE N. STROM, OF CHICAGO, ILLINOIS, ASSIGNOR TO PETTIBONE, MULLIKEN &COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SWIT CH-STAND Specification of Letters Patent.

Patented March 2, 1909.

Application filed. April 27, 1908. Serial No. 129,403.

T 0 all whom it may concern:

Be it known that I, EUGENE N. S'rnon, a citizen of the United States,residing at Chicago, in the county of Cook and State 01 Illinois, haveinvented a new and useful Imrovement in Switch-Stands, of which thefollowing is a specification.

My invention relates to an improved con struction of mechanism forthrowing a railway-switch from a switch-stand.

Referring to the accompanying drawings, Figure 1 is a broken view infront elevation of a switch-stand provided with my improvement; Fig. 2,a view of the same in side elevation; Fig. 3, a plan section showing thetable of the stand, taken on line 3, Fig. 1 Fig. 1, a plan section takenon line l, Fig. 1 Fig. 5,a section on line 5, Fig. 6; Figs. 6 and 7 aresections on line 6, Fig. 1, respectively showing the mechanism atopposite throws of the switch, and Figs. 8, i), and 10 are per s ectiveviews of members of the mechanism, s owing them in unassembled relation.

The frame 11 of the switch-stand may involve any desired generalconstruction, that shown being preferred because of its simplicity,lightness and strength, in consisting merely of two legs rising from abase 12, adjacent to which they are outwardly bor. ed and expanded, asillustrated, where they are connected by a yoke 13 cast integral withthem and forming a centralizing-bcaring 15 for the urpose hereinafterexplained; this bearing, eing directly above a similar hearing 16 formedon the base. The legs are surmounted by a table 17 rigidly bolted inplace and provided with peripheral notches 18 and 19 ninety degreesapart and respectively adjacent to stops 20 and 21 for the rotatablehead 22 carrying the operating lever 23 and pinned at its boss 24 to thetarget-rod or spindle 25, which finds its bearings in the table and thebase 12.

The parts thus far described need present no features of novelty.

On one side of the yoke 13 is provided the inwardl projecting elevatedstop 26, and a similar ower stop 27 projects inwardly from the oppositeside of the yoke. A vertical fulcrum-pin 28 is rigidly supported in thebearings 15 and 16. On the upper part of this pin is fulcrumed at itssleeve the crank or lever 29, most clearly shown in Fig. 8; and thecrank or lever 30 of general bell-crank shape, which is most clearlyshown in Fig. 10, is fulcrumed at its sleeve on the lower part of saidpin, whereby these two lovers are rotatably con'lined between saidbearings. One arm of the lever 29 terminates in an eye 29 for pivotalconnection therewith of a rod 31 (Fig. 4), leading to a remote semaphore(not shown) for operating the latter, and the op posite end of thislever is bifurcated to form a socket 29 with an extension 29 of a prongoi the fork provided with a depending locking-stop 29. One arm of thelever 30 terminates in an eye 30 for pivotal connection with theconnecting-rod 32 (Fig. 1), of a split-switch (not shown), the other armbeing bifurcated to form a socket 30 having an extension 30 on one sideprovided with an upwardly extending locking-stop 30. On the target-rod25 near its lower end is socured to rotate with it a cranlehead 33 (bestshown in Fig. 9) of general segmental shape, and comprising upper andlower arms 3 1 and 35 diverging from a boss 36 pinned to the targetnod,with an arc-shaped rim 36 connecting them at their outer ends and on theopposite ends of which are journaled, re spectively, the upwardlyprojecting antifriction roller 37, to engage with the socket 29", andthe downwardly projecting antil'riction roller 38 to engage with. thesocket 30".

The object of the particular arrangement shown and described Ol' myimproved mechanism is so to control a distant semaphore with relation toa railway-switch as to insure turning of the semaphore to itsdanger-display position before throwing the switch for the siding, andto insure, on the other hand, throwing of the switch for the main trackbefore the semaphore is turned from that position. In Figs. 4 and 6 themechanism is shown in the proper position for the 'lirstnamed operation,with the lever 23 in the table-notch 18 for locking the mechanism inthat position, from which it is changed by raising the lever out of thenotch and turning it to register with and enter the notch 19 with thefollowing-described result: Turning the target-rod swings the head 33 inthe direction to turn the lever 29, because of the engagement of theroller 37, forming one throwing-member, with the socket 29, and advancethe rod 31 to set the distant semaphore at danger, the arrangement beingsuch as to effect this result when the operating-lever attains theposition midway between the two table-notches. Continued turning of thetarget-rod rides the face of the rim 36 against the stop 2 9* to lockthe lever 29 and semaphore; and meantime the turning-head 33 has engagedthe roller 38 with the socket 330 of the lever 30 to turn the latter andt row the switch for the siding, in which position the switch is held bythe engagement of the roller 38 with the socket 30 until it is locked bydropping the operatingdever into the table-notch 19. The describedoporation brings the parts of the mechanism to the relative posit-ionsin which they are represented in Fig. 7, ready for the reverse throwingto first set the switch for the main track and thereupon turn thesemaphore from danger. To effect this last-named purpose, upon raisingthe operating-lever out of the table-notch 19 it is turned to rotate thetarget-rod, thereby swinging the head 33 to cause the engagement of theroller 38, constituting the other throwing-member, with the socket 30 toturn the lever 30 in the direction for throwing the switch, which iscompletely thrown when the operating-lever attains the midway positionreferred to. Continued turning of the operating-lever until it registerswith and enters the tablenotch 18 for the locking purpose, rides theface of the rim 36 against the stop 30 to lock the switch and engagesthe roller 37 with the socket 29 to turn the lever 29 in the directionfor moving the semaphore from danger and hold it there until it becomeslocked by introduction of the operating-lever into the table-notch 18.As will be observed, the throw of the lever 29 in one direction islimited by its engagement with the upper stop 26, and the lower stop 27is engaged by the lever 30 to limit its throw in the opposite direction,whereby the locking efiect described of the face of the rim 36 againstthe stops 29 and 50 is produced by its abutting them, respectivelyagainst the stops 26 and 27. It will also be observed that for thedescribed operations of the levers 29 and 39 they extend normally at anangle to each other of about ninety degrees, and that the throw of eachdescribes an arc of about ninety degrees. This specific arrangement maybe varied for different purposes to which my improved mechanism may,with suitable slight modifications, be applied, including that ofoperating a three-throw switch.

The primary novelty in the present inven tion consists in turning thesemaphore and throwing the switch, in succession, and, in throwing theswitch, presenting in proper display-position the signal on theswitchstand spindle, all by the single operation of turning the spindleby the operating lever continuously in one direction through an arc ofor approximating ninety degrees and thereby moving successive/1* atright-angles to each other the rods which respectively connect thedistant semaphore and the s\ itch with the throwing mechanism of thestand.

"What I claim as new and desire to secure by Letters Patent is 1. In aswitch-stand, the combination with a rotary spindle carrying anoperating lever, of a pair of cranks, a distant-semaphore operating-rodconnected with one crank and a switch-operating rod connected with theother crank, and means on said spindle engaging said cranks by turningsaid lever in one direction to move said rods successively, for thepurpose set forth.

2. In a switchstand, the combination with a rotary spindle carrying anoperating lever, of a pair of cranks extending at an angle each to theother, a distant-semaphore operating-rod connected with one crank and aswitch-operating rod connected with the other crank, and means on saidspindle engaging said cranks by turning said lever in one direction tomove said rods successively at right-angles to each other, for thepurpose set forth.

3. In a switchstand, the combination with a rotary spindle carrying anoperating handle, of a crank head thereon provided vith upwardly anddownwardly projecting throwing-members, an upper lever fulcrumed betweenits ends on said stand to extend at one end into the path of saidupwardly projecting member, and a lower lever fulcrumed between its endson said stand with one end extending into the path of said downwardlyprojecting member, a distantsemaphore operating rod connected with thefree end of one lever, and a switch-operating lever connected with thefree end of the other lever, said crank-head engaging said levers tomove the same successively when the switch spin dle is turned.

4. in a switch stand, the combination with the spindle, of a crank-headthereon provided with upwardly and downwardly projectingthrowing-meinbers, an upper lever fulcrumed between its ends on saidstand to extend at one end into the path of said upwardly-projectingmember and provided on said end with a locking-stop, a lower leverfulcrumed between its ends on said stand to extend normally at an angleto said upper lever with one end extending in the path of saiddownwardly-pro}ecting member and provided with a locking-stop, andthrowlimiting stops on said stand for said levers cooperating with saidcrank-head, for the purpose set forth.

5. In a switchstand, the combination with the spindle, of a crank-headthereon provided with upwardly and downwardly projecting throwing-members, an upper lever tulcruined between its ends on said stand andcontaining a socket in one end extending into the path of saidupwardly-projecting member, with a locking-stop on said end, and a lowerlever fulcrumed between its ends on said stand, extendlng at an angle tosaid u per lever and containing a socket in one en extending into thepath of said downwardlypro'ecting member, with a locking-stop 011 saiend, for the purpose set forth.

' respective y projecting upwardly and downwardly from said rim, afulcrum pin on said 15 stand, an upper lever fulcrumed between its endson said pin and having in one end a socket extending into the path ofsaid upper member and provided with a locking-stop, a lower leverfulcrumed between its ends on said pin to extend normally at an angle tosaid upper lever and having a socket in one end extending into the pathof said lower member and provided with a locking-stop, andthrow-limiting stops on said stand for said levers cooperating with saidrim, for 25 the purpose set forth.

EUGENE N STROM.

In presence of RALPH A. SOHAEFER, A. U. TI-IORIEN.

